Just got one the other day. Once AUTO programmed it's set & done. You can override it with manual. Press center button, scroll down to manual, press center button, "says Channel 1 Auto"(press down to goto channel 2), press the left button go from auto to 100% or to the right to adjust 0-100%, press center to enter, right to save.
On controller center is enter, up and down scrolls through the menu options and time options once in that mode, right and left scolls thru the item options after you choose the item from the menu.
Here's a link for the manual:
http://www.f3images.com/IMD/UserManuals/UZ3301.pdf
You have to have at least 4 settings for a programmed channel. My program looking like this for channel 1 (actinics). Go to 01, scroll right to time, use up and down to change time(military), scroll right to function, use up and down to toggle 0-100%, on, off, --%(unused). Scoll left to 01 then down to 02 and repeat. My 5-10 functions are unused until 50+ hour bulb burn in then you can dim them.
01 09:00 ON
02 09:01 100%
03 22:00 100%
04 22:00 OFF